Powder-blower



T. C. HOLMES. POWDER BLOWER. APPLICATION mzu JUNE 24. 191B.

Patented Dec. 13, 1921.

W hm,

INVENTOR PATENT OFFICE.

T OMAS CJH OLMES, SAN FRANCISCO, CALIFORNIA.

POWDER-BLOWER.

Specification of Letters Patent.

Patented Dec. 13, 1921.

Application filedJune 24, 1918. Serial No. 241,498.

To all whom it mag concern:

Be it known that I, THQMAS C. HOLMES, a

I citizen of the United States, residing at the city and county of San Francisco andState of'California, have invented a new and useful Improvement in Powder-Blowers, of which the following is a specification.

. This invention relates to a -powder blower and cluster and moreparticularly to ablower for discharging and distributing the powder.

One of the objects of the present invention is to provide a simple, cheaply manufactured, easily operated device for spraying or dustin fruit trees, vines, bushesand the like, whic mayalso be'used for destroying insects and vermin in poultry houses and even on the poultry itself. Another object of theinvention is to provide apowder container, a'bellows for forcing air therethrough and in conjunction therewith to provide a novel valve mechanism for admitting air to the bellows on the suction stroke and for bypassing the air j through the powder container on the compression stroke of the bellows. Another objectof the invention is to provide means for discharging any powder which may have a tendency to enter the bellows and to force said powderina forward direction and away from the operator when the device is being used. Further objects will hereinafter appear.

The invention consists of the parts and the construction, combination and arrangement of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure 1 is a central, vertical, longitudinal section through the powder container and blower.

Fig. 2 is a cross section on the line 2-2 of Fig. 1, showing the air admitting valve in the bottom of the powder container.

Referring to the drawings in detail, A indicates a standard form of bellows constructed of leather or like material, one end of which is secured to a base member 3, while I the opposite end is secured to a cover section 1 which is hingedly secured, asat 5. Formed on the base section 3 is a handle 6 and formed on the movable section 4 of the bellows is a cooperating handle 6*. Formed on the forward end of the base section 3 is an extension 7 which serves the function of a support for a powder container, generally indicated at 8.

This container is cylindrical in shape and is provided with a discharging spout 9 and a removable screw cover 10. Positioned in the bottom of the container 8 is a valve, generally indicated at 11, and formed in the extension of the base is a longitudinally extending air duct 12 which communicates with the valve 11 by an upwardly extending passage 13.

lows, while the forward end is closed by a plate 14:, which, in this instance, is perforated, as at 15, to serve two functions, first, that of admitting air to the bellows when they are separated tocharge the same with air, and, secondly, to permit any dustwhich mayhave leakedlby the valve 11 to be discharged when the bellows is compressed.

The provision of the opening 15, together withthe construction of the valve 11, is an important feature of the present invention, particularly the novel construction of the valven The valve consists ofa rectangular shaped piece of tin, such as shown at 11. This t1n seats over the opening 13 when the bellows isextended duringthe suction stroke and lifts away from the opening 13 to permit the. air to pass through the container 8 when the bellows is compressed. The bottom section of the container is out along two lines and the metal in place of being removed is turned up to form guide and limiting lugs 16 for the valve plate 11.

A simple and efficient valve is in this man ner provided which thoroughly distributes the entering an" as it passes through the powder, and which also prevents any amount of powder from being drawn back into the bellows. Any small quantity of powder that may leak by the valve will, however, be discharged through the forward opening 15 the moment the bellows is compressed, thus keeping the bellows clean and at the same time preventing said dust from soiling the operator or falling on the ground as a sufiicient quantity of air passes through the opening 15 to project it forwardly a considerable distance. The opening to this extent serves as a second dischar e opening and all powder thus projected is just as efiiciently applied as that which dischar es through the spout 9. The air in passing %y the valve 11 is forced upwardly through the powder contained within the container. No lumps or quantities of powder can in this manner The longitudinal air duct 12 communicates at its rear end with the beldischarge, as the force of the air is not sufli cient to lift it to the discharge spout 9. Any small particles that are notactually reduced to dust will, however, be taken care of by mesh screen 17 in front of construction may be employed without departing from the spirit of my invention as disclosed in the appended claims, and that I do not wish to limit myself to the specific design and construction here shown,

Having thus described my invention, what I claim and desire'to secure by Letters Patcut is: v V

1. In a powder blower of the character described, the combination with the bellows connected by an air passage with the powder container, of a pair of vertically extending guide lugs formed in the bottom of the container and positioned on opposite sides of the air passage, a valve plate positioned between the lugs, said valve plate'being re-' cessed at its opposite ends for the reception of the lugs, and an angular horizontally disposed extension on theupper end of each lug to limitthe upward movement of the the bottom of the container communicating with said air passage, a rectangular shaped valve plate adapted to cover the opening in the bottom of the container, a recess formed in each end of the valve plate, metal tangs cut and upraised from the bottom of the container, said tangs passing through the recesses in the ends of the plate and forming a guide thereof, and a stop member on the upper end of each guide tang limiting the upward movement of the valve plate with relation to thebottom of the container;

3; In a device of the character described-a valve'embodying a fiat metal member, a supporttherefor, an opening in saidport adapt ed to be covered by theplate, a pair of lugs formed from said plate and projecting vertically therefrom, a recess in each end of the valve plate forming guide projections engaging opposite sides of the lugs, and an angular extension on the upper end of each lug to limit vertical movement ofthe uide plate withrelation' to thesupport and the ugs. j V r a In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

THOMAS C. HOLMES. Witnesses: V

W. W. HEALEY, M. ErEwrNe. 

